Here's an example of an offending template:
{{cite journal |title=Mrs. Obama goes to Washington |author=Slevin,
Peter |date=March 18, 2009
|journal=[[Princeton Alumni Weekly]] |volume=109 |number=10 |pages=18–22}}
>From Special:ExpandTemplates, this renders as
Slevin, Peter (March 18, 2009). [Expression error: Missing operand for
> "Mrs. Obama goes to Washington"]. Princeton Alumni Weekly 109 (10):
18–22.
The error goes away if I remove "|title=Mrs. Obama goes to Washington".
The error remains if I change it to anything else, such as "|title=Obama".
I thought it might be a problem with the Cite extension, but updating
with the latest trunk version of Cite didn't help.
The full XML output & result from Special:ExpandTemplates is below. How odd...
<root><template><title>cite journal
</title><part><name>title</name>=<value>Mrs. Obama goes to Washington
</value></part><part><name>author</name>=<value>Slevin, Peter
</value></part><part><name>date</name>=<value>March 18, 2009
</value></part><part><name>journal</name>=<value>[[Princeton Alumni
Weekly]] </value></part><part><name>volume</name>=<value>109
</value></part><part><name>number</name>=<value>10
</value></part><part><name>pages</name>=<value>18–22</value></part></template></root>
<span class="citation Journal"
>Slevin, Peter (March 18, 2009). [<strong class="error">Expression
>error: Missing operand for ></strong> "Mrs. Obama goes to
>Washington"]. ''<nowiki />[[Princeton Alumni Weekly]]<nowiki
>/>'' '''<nowiki />109<nowiki />''' (10)<nowiki>: </nowiki>
>18–22.</span><span
class="Z3988"
title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Mrs.+Obama+goes+to+Washington&rft.jtitle=%5B%5BPrinceton+Alumni+Weekly%5D%5D&rft.aulast=Slevin%2C+Peter&rft.au=Slevin%2C+Peter&rft.date=March+18%2C+2009&rft.volume=109&rft.issue=10&rft.pages=18%E2%80%9322&rfr_id=info:sid/en.wikipedia.org:Special:ExpandTemplates"><span
style="display: none;"> </span></span>
On Wed, Feb 17, 2010 at 10:06 AM, Aryeh Gregor
<[email protected]> wrote:
> On Tue, Feb 16, 2010 at 10:42 PM, Eric Sun <[email protected]> wrote:
>> Even after setting $wgUseTidy = true, many of my pages show an error
>> "Expression error: Missing operand for >" at the bottom in the
>> References section.
>
> This is a ParserFunctions-related problem.
>
>> It looks like an error message produced by the ParserFunctions
>> package. I've never seen this on en.wikipedia.org so I wonder if some
>> customization or other cleanup has been done.
>>
>> I'm running MediaWiki 1.15.1 and the versions of Cite and
>> ParserFunctions that correspond to 1.15.x.
>> Is this something easily fixable?
>
> Wikipedia uses the latest alpha versions, in this case 1.16alpha.
> It's possible that some feature was added in more recent
> ParserFunctions versions that's incompatible. But I can't actually
> see any changes to Expr.php since the 1.15 branch, or any relevant
> ParserFunctions changes at all.
>
> Do you have links to pages on your site that show the error? It
> should be possible to track down exactly what's causing it using
> Special:ExpandTemplates, if no one has any ideas.
>
> _______________________________________________
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